Gill, Ashley & Garcia, Mariella & An, Se Won & Scott, JoAnna & Seminario, Ana. (2020). Clinical Comparison of Three Esthetic Full-Coverage Restorations in Primary Maxillary Incisors at 12 Months. Pediatric dentistry. 42. 367-372.

PURPOSE

The purpose of this study was to compare the 12-month clinical outcomes of primary maxillary incisors restored with composite strip crowns (CSCs), NuSmile preveneered stainless steel crowns (PVSSCs), and NuSmile zirconia crowns (ZCs).

METHODS

A total of 135

teeth in 49 two- to four-year-olds with early childhood caries were randomly assigned to crown groups. Demographic and tooth-related variables at baseline and 12 months were assessed by calibrated examiners. Fisher’s exact or chi-square tests were used to test associations (P<0.05). Parental

satisfaction of crown esthetics was evaluated by questionnaire.

RESULTS

Children were, on average, 3.4 years old, female (55 percent), and had a mean decayed, missing, and filled primary teeth (dmft) index score of 10.6. At 12 months, crown retention was significantly lower for CSCs versus PVSSCs or ZCs (79 percent, 100 percent, and 95 percent, respectively; P=0.002). Partial and complete loss of material was significantly higher in CSCs than PVSSCs or ZCs (29 percent, 11 percent, and zero percent, respectively; P<0.001). CSCs presented with increased marginal discrepancies

and color change (P<0.001). Most parents were very satisfied (87 percent); those dissatisfied were concerned with the color of CSCs and PVSSCs (63 percent versus 37 percent; P=0.005).

CONCLUSION

Composite strip crowns showed significantly reduced clinical success in retention, durability, marginal adaptation, and color compared to preveneered stainless steel crowns or zirconia crowns. Parental esthetic satisfaction was highest for NuSmile ZCs.

Lopez-Loverich, Angela & Garcia, Maria & Donly, Kevin. (2015). Retrospective Study of Retention of Stainless Steel Crowns and Pre-veneered Crowns on Primary Anterior Teeth. Pediatric dentistry. 37. 530-534.

PURPOSE

The purpose of this retrospective chart review was to explore the retention of anterior pre-veneered stainless steel crowns (NuSmile) and conventional stainless steel crowns (3M ESPE) placed on primary anterior teeth.

METHODS

Records for children were reviewed over four years using the electronic record system axiUm. Data collected included child’s age at time of crown placement, date of placement, tooth number, type of crown, patient behavior, treatment environment, provider type, crown presence, absence, and cementation success or failure at subsequent recall visits.

RESULTS

A total of 637 anterior crowns in children treated with either or both crown types met this study’s inclusion criteria. Of these crowns, 483 were NuSmile Signature crowns and 154 were stainless steel crowns. There was a nine percent failure rate for the NuSmile Signature crowns and a seven percent failure rate for the stainless steel crowns. There was no statistically significant difference in crown retention rates between the two groups (P<0.05).

CONCLUSION

A full-coverage restoration that can follow the lifespan of the primary anterior dentition in high-risk children is needed. The results from this study indicate good crown retention rates for both crown types with no statistically significant difference between them (P<0.05).